Dual flush device for toilet water tank

ABSTRACT

The present invention is related to a dual flush device for toilet water tank. A manually-operated press handle, in which a first switch-bar and a second switch-bar are intercalated on, is installed on a side-wall of the water tank. The switch-bar has a hollow bed, the tube of the hollow bed has a pivotal hole of the holder. The front edge of a bent-arm conjugates with an axial hole of the second switch-bar, the other end of the bent-arm has a chain which is fixed in a central hole of a moving element of a water-drainer. The round axis of the holder conjugates with a conduct hole of a gliding plate; and the screw nut is fixed by a stud to hold a float-ball under water. The water-drainer has a draining part. Inside the draining part there is a moving element. The moving element has a central hole, and a flush valve at the bottom, and a float-ball held in inner space. Below the draining part, there is provided an outer screw-thread, on the outer screw-thread there is mounted a base. In view of the above disclosure, it is the primary intention of the invention to successfully control the quantity of released water by dual flush. This device is not only a simple structure but also easily using at the user&#39;s will.

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a dual flush device for a toilet water tank. In particular, the present invention provides an improvement about flush device used in toilet water tank.

BACKGROUND ART

There is known that a commercially available flush toilet has a manually operation press handle which is mounted on a sidewall or on the tank lid. When the flush-valve inside the water tank is pulled up by means of pressing down the press handle, the water in the tank is released to the bowl from the drainage hole. But this mechanism makes the water drains out totally. The quantity of water can not be controlled as the user's demand. Furthermore, the prior art known to the inventor is TIPO pat. No. 89200711. The said patent has disclosed a device in which two handles connect to two flap-arms respectively. When the handle is pulled, it comes out a result of controlling one flap-arm or two flap-arms simultaneously operated, and a result of the operation of related elements such as horizontal nip-rod and vertical slide-bar. That patent is not only complicated in manufacture, but also expensive in cost.

SUMMARY OF THE INVENTION

This invention relates to a novel dual flush device for toilets to provide a means for selecting the quantity of water drained from water tank according to the user's demand and thereby achieving an advantage of saving water. This device is able to adjust the quantity of water released from water tank according to the different user's demand. It also provides a more convenient operation, and can achieve the purpose of water-saving, cost-saving and environment protection.

This invention provides a manually-operated press handle located at one side-wall of a toilet water tank.

The intention of the present invention is to provide a dual mode flush mechanism in simple mechanical construction to control the water release at ideal quantity. Also further intention of the present invention is to provide a dual mode flush device easily installed and conveniently operated by the users. It is yet another intention of the present invention to provide a dual flush mechanism that may effectively achieve water-saving.

Having illustrated and described the principles of my invention by what are presently preferred embodiments, it should be apparent to those persons skilled in the art that the illustrated embodiment may be modified without departing from such principles.

While a preferred embodiment of the device, together with alternate embodiments of the device, have been shown and described, it will be understood that there is no intent to limit the invention by its disclosure, but rather it is intended to cover all modifications and alternate constructions falling within the spirit and the scope of the invention as defined in the appended claims.

The present invention achieves the intention of controlling the quantity of water-release in the best way by using a simple mechanism of dual flush. It is not only quick and easy installation but also adaptable in any type of water tank of toilet. The present invention provides convenient operation for users, also achieves the purpose of water saving, completely meets the goal of energy-saving policy of government.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, perspective, disassembled view of a press handle in a first embodiment of the subject invention;

FIG. 2 is a front elevational assembled view of the press handle in the first embodiment of the subject invention;

FIG. 3A is a front perspective, elevational, view of an assembled press handle and a water-drainer in the first embodiment of the subject invention;

FIG. 3B is a cross-sectional view taken along the line A-A of FIG. 3A, illustrating the press handle and the water-drainer in the first embodiment of the subject invention;

FIG. 4 is a front elevational view of a disassembled press button part in a second embodiment of the subject invention;

FIG. 5 is a front elevational view of an assembled press button part and a turntable in the second embodiment of the subject invention;

FIG. 6 is a front elevational view of an assemble of a press button part depicting that a first depressor is pressed down to drive the turntable in the second embodiment of the subject invention;

FIG. 7 is a front elevational view of an assembled press button part depicting that the second depressor is pressed down to drive the turntable in the second embodiment of the subject invention;

FIG. 8 is an exploded, perspective, view of a disassembled link body and the water-drainer in the second embodiment of the subject invention;

FIG. 9 is a front elevational view of an assembled link body and the water-drainer in the second embodiment of the subject invention; and

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9, depicting the link body and the water-drainer in the second embodiment of the subject invention.

FIG. 11 is an external view of a toilet system using the present invention, depicting the relative location of the two embodiments of the switch-bar on a water tank.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In order to explain the technique of the present invention clearly is and completely, two embodiments of dual flush devices according to the present invention is described in reference to the drawings, wherein like numerals refer to like parts throughout the drawings.

The First Embodiment

Referring now to FIG. 3A, there is illustrated a dual flush device for a toilet water tank according to the present invention. At one side wall of a water tank there is provided a manually-operated press handle, (FIGS. 1, 2 and FIG. 11). The press handle comprises a first switch-bar (2) and a second switch-bar (1). A dent or depressed surface (12) sits inside the first switch-bar (2), and a pivot (9) is at the center of the dent (12). Within the pivot (9) there is a hollow roundness with a notch (11) at upper side. A retaining blockade (10) is set inside the dent (12) and connected with the pivot (9). A axial stick or axle (7) which has a axial hole (8) inside, is installed at the central part of one end of second switch-bar (1). When the axial stick (7) is put into the hollow roundness of the pivot (9), the first switch-bar (2) is mounted on the second switch-bar (1).

On the first switch-bar (2), there is a hollow bed (3) comprising a protruding tube (13) which is hollow inside. The lower portion of hollow bed (3) comprises flange (21), and an indentation (14) is formed between flange. The pivot (9) is set in the protruding tube (13), and the indentation (14) of the hollow bed (3) is conjugated with the retaining blockade (10) of the first switch-bar (2), and forms an aperture between the indentation (14) and the retaining blockade (10). A holder (4) which is a plate, comprises a pivotal hole (16) on one end of the plate, and a protruding grading round-axis (15) on the other end. The holder (4) is put on the hollow bed (3), and the pivotal hole (16) is plugged outside the protruding tube (13) which is fixed in the water tank through its screw-nut (23). An axial hole (8) of the second switch-bar (1) is conjugated with a front edge (17) of a bent arm (5) which is formed as L-shape. There is an aperture between the front edge (17) and the notch (11) of the first switch-bar (2). The other end of the bent arm (5) has a locking hole (26) to lock a lift-chain (25) which connects to the central hole (72) on the moving element (66) of a water-drainer (60). There is provided a gliding plate (6) which has a grading contact side (20) at one end, and has screw nut (18) as well as a conducting hole (19) at the other end. The conducting hole (19) is located on the round axis (15) of the holder (4), and the screw nut (18) is fixed by a stud (24) to hold a float-ball (22) under water. The contact side (20) of the gliding plate (6) is located on the circular surface of the pivot (9) of the first switch-bar (2).

The water-drainer (60) comprises a draining part (61) (FIG. 3B), inside of which the moving element (66) that has a central hole (72) is located. At the bottom of the draining part (61) there is installed a flush valve (62). Inside the draining part (61) there is installed a fixed float-ball (63) which has a plate (65) at one end. The plate (65) has an engaging-surface (68). The draining part (61) has a slot (64) which has an outer screw thread (67) set below the slot (64). On the top of outer screw thread (67) there is mounted a base (69) with an outlet hole (71) inside. Outside the outlet hole (71) is a flange (70) which is conjugated with the flush valve (62). The outer screw thread (67) provides a means for adjustment of the position of spillway of the water tank. Through the above-mentioned composition, the purpose for controlling the quantity of dual flushing water can be achieved.

According to the above subassembly of the present invention, when the first switch-bar (2) is pressed, the bent arm (5) drags the flush valve (62) to move upwards a predetermined distance, thereby releasing water from the outlet hole (71) into toilet bowl (75). Then contact side (20) of the gliding plate (6) is mounted on the notch (11) of the first switch-bar (2). Until water level goes down to a height under the float-ball (22), the contact side (20) will move to the circular surface of the pivot (9), and at the same time, the flush valve (62) moves downwards to cover the outlet hole (71). The first switch-bar (2) then returns to the original position.

When the second switch-bar (1) is pressed, the bent arm (5) drags the flush valve (62) to move upwards a predetermined longer distance to uncover the float-ball engaging-surface (68) of the water-drainer (60) mount on the slot (64) of the draining part (61). Thus, water is released from the outlet hole (71) into toilet bowl. Then the contact side (20) of the gliding plate (6) is mounted on the notch (11) of the first switch-bar (2). Until water level goes down to a height under the float-ball (22), the contact side (20) will move to the circular surface of the pivot (9); then water level keeps going down to a height under the float-ball (63) of the water-drainer (60), the float-ball engaging-surface (68) will disengage with the slot (64) of the draining part (61). After the water is released completely into the toilet bowl (75), the flush valve (62) moves downwards to cover the outlet hole (71), then the second switch-bar (1) returns to original position.

The Second Embodiment

Moreover, now referring to FIGS. 5, 9, and 10, there is provided a dual flush device for a toilet water tank. In this dual flush device, there is installed a manually-operated press button switch (31) (FIG. 4) at the lid of the water tank. The device comprises a water-drainer (60) as described in the first embodiment. The press button switch (31) includes a first depressor (33) and a second depressor (34). Under the first depressor (33) there is located a retaining blockade (35), but there is no retaining blockade located under the second depressor (34). The first depressor (33) and the second depressor (34) are fixed in the inner space of a box (38). A movable driving-rod (36) is set under them. In the middle of box (38) there is provided a round hole to allow the driving-rod (36) move forward and backward.

On a mandrel (53) of the driving-rod (36) there is set a coil spring (52) (FIG. 4). A fixation bed (50) has a hollow outer screw thread (51). The mandrel (53) of the driving-rod (36) along with the spring (52) are located in the hollow space of the outer screw thread (51), and using a stud (54) to hold the mandrel (53) and a base sheet (37) tightly. There is provided a link body (32) under the base sheet (37) (FIGS. 8, 9 and 10). The link body (32) has a turntable (46) with a round hole (47) located at the center, and at opposite side has a turn-rod (39) and a notch (40). A round tank (74) which is set under the turntable (46), is fixed by a rope (73) on the central hole (72) of the moving element (66) of water-drainer (60). The round hole (47) is used to conjugate with a pivot (55) of a holder (42). Further, there is provided a round-axis (44) at the other end of the holder (42), and a gliding plate (41) is fixed on it. One end of the gliding plate (41) forms a protruding inlet-end (43), and at the other end forms a locking hole and conduct-hole (48). The conduct-hole (48) is plugged in the round-axis (44) of the holder (42), and the locking hole is fixed with a stud (45) to hold a float-ball (49) under water. The inlet-end (43) of the gliding plate (41) is located on the circular surface of the link body (32).

According to the above subassembly of the present invention (as shown in FIG. 6), when the first depressor (33) is pressed into the body (38), the driving-rod (36) leads the base sheet (37) to move a predetermined distance, then the turn-rod (39) of the turntable (46) of the link body (32) rotates, in the meantime the inlet-end (43) of the gliding plate (41) engages into the notch (40) of the turntable (46). Thus, the water is released from the outlet hole (71) into toilet bowl. When the water level goes down to a height under the float-ball (49), the inlet-end (43) will depart the notch (40). The turntable (46) rotates to original position, then the flush valve (62) moves downwards to cover the outlet hole (71); and then the first depressor (33) returns to original position.

When the second depressor (34) is pressed into the body (38) until the bottom, the driving-rod (36) will lead the base sheet (37) to move a predetermined longer distance. The turn-rod (39) of the turntable (46) of the link body (32) rotates. In the meantime the notch (40) rotates over the inlet-end (43) of the gliding plate (41), and makes the float-ball engaging-surface (68) of the water-drainer (60) to engage with the slot (64) of the draining part (61). The water is then released from the outlet hole (71) into toilet bowl (75). When water level falls below the position of float-ball (63) of the water-drainer (60), the float-ball engaging-surface (68) of the water-drainer (60) disengages with the slot (64) of the draining part (61). After the water has been released completely into the toilet bowl (75), the flush valve (62) moves downwards to cover the outlet hole (71), and the turntable (46) rotates to original position, then the second depressor (34) returns to original position.

Thus, the present invention provides a pivot of a first switch-bar that is mounted on the axial stick of the second switch-bar. On the pivot there is a hollow bed. The pivotal hole of a holder is mounted on a tube of the hollow bed. The tube is fixed in the water tank by a screw-nut. A front edge of a bent arm is conjugated with an axial hole of a second switch-bar. The other end of the bent arm has a chain which is fixed on a central hole of a moving element. A round-axis of the holder is conjugated with a conduct-hole of a gliding plate. The screw-nut of the gliding plate is fixed by a stud to hold a float-ball under the water.

A water-drainer has a draining part which has a moving element inside. The moving element has a central hole, and a flush valve is fixed at the bottom, and a float ball is fixed in inner space. The float ball has a plate at one end; the draining part has a slot; below the draining part there is provided a outer screw thread; a base is mounted on the outer screw thread.

BRIEF DESCRIPTION OF THE ELEMENTS PRESENTING IN DRAWINGS Side wall press handle: 1 second switch-bar 2 first switch-bar 3 hollow bed 4 holder 5 bent arm 6 gliding plate 7 axial stick 8 axial hole 9 pivot 10 retaining blockade 11 notch 12 dent 13 tube 14 indentation 15 round-axis 16 pivotal hole 17 front edge 18 screw-nut 19 conduct-hole 20 contact side 21 flange 22 float ball 23 screw-nut 24 stud 25 lift-chain 26 locking hole Tank lid press button switch: 31 press button switch 32 link body 33 first depressor 34 second depressor 35 retaining blockade 36 driving-rod 37 base sheet 38 box 39 turn-rod 40 notch 41 gliding plate 42 holder 43 inlet-end 44 round-axis 45 stud 46 turntable 47 round hole 48 conduct-hole 49 float-ball 50 fixation bed 51 outer screw thread 52 spring 53 mandrel 54 stud 55 pivot water-drainer: 60 water-drainer 61 draining part 62 flush valve 63 float-ball 64 slot 65 plate 66 moving element 67 outer screw thread 68 engaging-surface 69 base 70 flange 71 outlet hole 72 central hole 73 rope 74 round tank 75 toilet bowl 

1. A dual flush device for toilet water tank, comprising: a first switch-bar, which has a dent located inside; a pivot that has a hollow roundness at the center of the dent, a notch is at the upper side of the pivot; a retaining blockade is located in the dent and connected to the pivot; a second switch-bar, that is mounted under the first switch-bar, wherein an axial stick which has an axial hole inside, is located at the central part of one end; a hollow bed is mounted on the first switch-bar, which has a protruding tube; the tube is hollow, has a flange at the lower part, and there is an indentation is formed between flange; a holder, which is located on the hollow bed, comprising a pivotal hole at one end of a plate, and a protruding grading round-axis at the other end of the plate; an L-shaped bent arm has a front edge that is conjugated with the axial hole of the second switch-bar and at the other end has a locking hole to fix a lift-chain which connects to a central hole of a moving element of a water-drainer; a gliding plate, located on the holder, has a grading contact side at one end, and has a screw nut as well as a conduct-hole at the other end, the conduct-hole is on the round-axis of the holder, the screw nut is fixed by a stud to hold a float ball under water; a water-drainer having a base and a draining part; inside the draining part there is a moving element, the moving element has a central hole and has a flush valve at the bottom, and a float ball held at inner space; the draining part has slot, below the draining part has a outer screw thread, on the outer screw thread has a base.
 2. The dual flush device for toilet water tank as defined in claim 1, wherein the axial stick of the second switch-bar is put into the roundness of the pivot of the first switch-bar.
 3. The dual flush device for toilet water tank as defined in claim 1, wherein the pivot of the first switch-bar is in the tube of the hollow bed, the indentation of the hollow bed is conjugated with the retaining blockade of the first switch-bar and forms an aperture between the indentation and the retaining blockade.
 4. The dual flush device for toilet water tank as defined in claim 1, wherein there is formed an aperture between the front edge of the bent arm and the notch of the first switch-bar.
 5. The dual flush device for toilet water tank as defined in claim 1, wherein an outlet hole is in the base of the water-drainer, outside of the outlet hole is a flange which is conjugated with the flush valve.
 6. The dual flush device for toilet water tank as defined in claim 1, wherein one end of the float ball of the water-drainer has a plate which has an engaging-surface on it.
 7. A dual flush device for toilet water tank, comprising: a press button switch comprises a first depressor and a second depressor; the first depressor and the second depressor are fixed in the inner space of a box, a movable driving-rod is set under them; in the middle of box there is provided a round hole; a spring is set on a mandrel of the driving-rod; a fixation bed has a hollow outer screw thread, the mandrel of the driving-rod along with the spring are fixed into the hollow space of the outer screw thread, so that the mandrel and a base sheet are held tightly together; a link body is located below the base sheet; the link body has a turntable with a round hole located at the center, at an opposite side has a turn-rod and a notch; a round tank is set under the turntable, and is fixed on the central hole of the moving element of water-drainer by a rope; a holder is under the turntable; at the other end of the holder is a round-axis, and a gliding plate is fixed on the round-axis; at one end of the gliding plate forms a protruding inlet-end, and at the other end forms a locking hole and conduct-hole; a water-drainer, which has a draining part; inside the draining part has a moving element, the moving element has a central hole and has a flush valve at the bottom, and a float ball held at inner space; the draining part has slot, below the draining part has a outer screw thread, on the outer screw thread has a base.
 8. The dual flush device for toilet water tank as defined in claim 7, wherein a retaining blockade is located under the first depressor, but no retaining blockade is located under the second depressor.
 9. The dual flush device for toilet water tank as defined in claim 7, wherein the round hole of the turntable is used to conjugate with a pivot of the holder.
 10. The dual flush device for toilet water tank as defined in claim 7, wherein the conduct-hole is plugged in the round-axis of the holder, the locking hole is fixed with a stud to hold a float-ball under water.
 11. The dual flush device for toilet water tank as defined in claim 7, wherein an outlet hole is in the base of the water-drainer, outside of the outlet hole is a flange which is conjugated with the flush valve.
 12. The dual flush device for toilet water tank as defined in claim 7, wherein one end of the float ball of the water-drainer has a plate which has an engaging-surface on it. 